With Foxy gone, Harman and Ising conceived a new star, Piggy, who, like Foxy is exactly Mickey Mouse (including the trousers), but now in Pig form. As with his predecessor, the plagiarism is most visible in Piggy’s girlfriend Fluffy, who is as Minnie as Piggy is Mickey.

Piggy was even more short-lived than Foxy, lasting only two cartoons, of which this is the first. In it we watch Piggy and Fluffy visiting a theater. At a certain point Piggy hits the stage to perform ‘Silver Threads Among The Gold’, a 1873 hit song that by 1931 had become synonymous with old-fashionedness. No wonder he’s booed away. At that point three drunkards burst into the title song. Piggy gets drunk, too, and leaves the theater and his girlfriend.

Outside he provides his car with some booze, a story idea borrowed from ‘Traffic Troubles‘ (Mickey Mouse) and ‘The New Car’ (Flip the Frog) from earlier that year. Unlike the earlier two films, though, this leads to a wonderfully drunken scene, in which the whole background becomes wobbly. This is one of the most memorable scenes of all early Warner Bros. cartoons, making ‘You Don’t Know What You’re Doin’!’a must-see, despite the rather mediocre scenes preceding it. Moreover, the cartoon features some particularly hot jazz music, provided by Gus Arnheim’s Brunswick Recording Orchestra.